package com.atguigu.mr.kv;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;

import java.io.IOException;

/**
 * @description:
 * @create: 2019-12-17 21:34
 * @author: baojinlong
 **/
public class KVTextReducer extends Reducer<Text, IntWritable, Text, IntWritable> {
    private IntWritable nowValue = new IntWritable();

    @Override
    protected void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException, InterruptedException {
        int sum = 0;
        for (IntWritable value : values) {
            sum += value.get();
        }
        // <banzhang,1> <bangzhang,1>
        nowValue.set(sum);
        context.write(key, nowValue);
    }
}
